|
Been there done that with the dyno!:3DSMILE:
Scott |
Driving Schools
Nantucket you are so right on, we see so many people with "Huge HP" in the DFW area and 95% haven't a clue on how to drive. I really enjoy taking a car with 150 less HP on a road course and walking away from other cars in the twisties lap after lap while running street tires and the big HP boys are on racing slicks. I have to tell you, we have a lady in our DFW group that does come to the track ever chance she gets and my money is on her any day, because she practices. High performance driving needs to be practiced as often as possible. I guess it's one of the things I will never understand, owning a HP car and not being able to drive it to the limit. (except 50 feet at a time). Drivers find a local school in your area and go play, you don't have to go any faster than you are comfortable. Most track day events have instruction, get some. And then when you get into a situation on track or off, your talent gauge will not be OUT. db:D:D:D
|
Big horse power is nice, but STREERABILITY is nicer! You will be traction limited at some point. Keep the compression within the 'pump gas' range and the cam profile should match your expected cruising rpm, speed. Those are the two keys to maximize enjoyment on the street.
|
I have 575 hp from my FE 427 and, well, I would like more! :D See below:
|
One of the posts here suggests you'll lose between 35% and 45% flywheel to rear wheel horse power. Those figures are considerably higher than anything we've seen in the race cars we have built.
|
Maxum101.....
Get The Poly Mounts, I Just Put Them On For That Reason And Like Them Alot, Stops Alot Of Driveline Vibration Also. Brakes Are Fine, Swaybars Might Be A Upgrade, I Havent Done That Yet, I Have A Roush 427, And Like It Very Much. Blue427 |
Drive Line Loss
Quote:
|
Quote:
My car was set-up by Olthoff, but now that it is on the west coast Eric Voss has done some work on it for me. He is in SoCal and all he does is Cobra's, GT40's and Coupes. Great guy and does great work. |
Horsepower's a little like sex...
...if a little is good....a lot's GOT to be better...! ;) |
Quote:
You can't expect to get good rwhp numbers with low losses from the crank without a special effort put into the exhaust. |
Powerful brakes are good too to go along with the HP and speed....dont forget about those.
|
Quote:
I would much rather die from too much than die from not enough. |
HP Losses
Quote:
|
dyno numbers
I recently had my BDR Roush 402SR/TW/TK0600 on the Dyno at Performance Engineering. The dyno run that came with the engine from Roush showed 486 HP/487 TQ (at the flywheel). The PE dyno run showed 394 HP/383 TQ at the wheels.
|
aa4v - I've got the same set-up in my SPF, so that gives me a pretty good idea of what my HP and TQ is at the rear wheels. Thanks for posting that.
|
aa4v - those numbers would be very close to the numbers we have seen. The engine (533 dual 750's) I currently have did 696 hp and when we do the chassis dyno we're looking for around 570 to 580. Sidepipes and headers are a big part of it. We used 2" pipes on the headers and 4" on the sidepipes with the spiral inserts which we had great success with in the past.
|
Maxum 101 (and others)
I'm wanting more power also. Currently, with this engine, I have 400 @ the wheels. So, the numbers I have in mind is apx. 550 to the ground or 600 + at the flywheel. What I would like to bring to attention on this thread is, yes, high HP/TQ is just plain kick in the pants fun, and like I said, wanting more. But, how much do we want to suffer in gas mileage vs the power we crave ? I get apx. between 10-16 mpg city/hwy, depending on how much fun I have with the throttle. With you guys having the 482 cu. or so, and having say,....500 + RWHP, how is your mileage ? (please be honest) If it drops down to 8 mpg, I would have more serious thinking to do. %/:eek::confused: Maxum 101- have you thought about this issue too ? |
You got to be kidding me!
MPG what is that? The EPA sticker must have been lost in transit. I have never even tried to determine it. Will it stop me from going somewhere? No. I try to find away to take the car everwhere I need to go. My wife said I even make stuff up so I can take the car. I own a replicate because I want to drive it. I don't own an original to look at, I want the full experience. I am surly not worry about operating cost.
|
Quote:
|
I do agree. Six other cars and I went to Kansas and back on the Hot Rod Power Tour. When we were planning on going, we all agreed to not worry about gas prices, and have a @hit load of fun, and we did. It was a blast and were going next year.
Come on guys, it has matter to at some point, especially with todays cost of gas. :rolleyes: What would you rather do, stay home and save up money for a while because your cobra gets 8 mpg and sit there wishing you could drive it or go anytime you want because you get say,...15 mpg. If I still had my Pro-Street Camaro, I would not even think, about driving as much as I do the Cobra. It actually did get 8 mpg. That's one, reason I sold it to build the cobra. (out of curiosity, what does your 462 get, honestly) ? Like I said, at some point, you have to say,.....enuff z enuff. ;) |
| All times are GMT -7. The time now is 08:47 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: